Anglicized form of the Irish name Caoimhín, derived from the older Irish Cóemgein, composed of the Old Irish elementscóem "kind, gentle, handsome" and gein "birth". Saint Caoimhín established a monastery in Glendalough, Ireland in the 6th century and is the patron saint of Dublin. It became popular in the English-speaking world outside of Ireland in the 20th century.